Researchers spent 15 years studying the breasts of over 330 women (only in France, folks), and concluded that wearing a bra does not prevent sagging or ease back pain as commonly thought. "Medically, physiologically, anatomically-breasts gain no benefit from being denied gravity, Professor Jean-Denis Rouillon, from the University of Besanon, told France Info Radio. "On the contrary, they get saggier with a bra."